Delete ghost when respawning (#3519)

* Delete ghost when respawning

Fix session.AttachedEntity not being set to null when mind is wiped
Fix MindComponent not getting disconnected when Mind is wiped
Rename OwnedMob to OwnedComponent

* Update Content.Server/GameTicking/GameTicker.cs

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Co-authored-by: Paul Ritter <ritter.paul1@googlemail.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/Players/PlayerData.cs

@@ -1,4 +1,4 @@
-#nullable enable
+#nullable enable
 using Content.Server.Mobs;
 using Robust.Server.Player;
 using Robust.Shared.Network;
@@ -33,7 +33,8 @@ namespace Content.Server.Players
 
         public void WipeMind()
         {
-            Mind?.ChangeOwningPlayer(null);
+            Mind?.TransferTo(null);
+            Mind?.RemoveOwningPlayer();
             Mind = null;
         }